Removing bitumen from part of an external wall

[gifted amateur]

We've just had an old tiled canopy removed at rear of house. All the original facing bricks are there, behind where it was (good!), but two rows of them are covered in thick, solid bitumen (at least, that's what it was called by the builder who removed the canopy).

I want to remove the bitumen as fully as possible, without harming the fine London Stock bricks themselves - and without spillage/damage to new double glazing and patio immediately below.

What options do I have? Minimal elbow grease solutions preferred ...

Thanks ...